What It Is and Where It Goes
The Molex Eurostyle 39357 393570020 is a 20-position single-level terminal block designed for PCB mounting. It uses a screw rising cage clamp to terminate wires from 16 to 28 AWG, with the wire entering horizontally — parallel to the board surface. The 0.138" (3.50 mm) pitch keeps the board footprint compact while still allowing the 12 A per circuit rating at 300 V.
The 395443008 is an 8-position block in the Eurostyle ESE 39544 series with a 0.200" (5.08 mm) pitch and a 15 A rating. The 393570020 runs tighter at 3.50 mm pitch and 12 A, so it fits a denser board layout but carries less current per circuit. The 395443008 also uses a steel zinc-plated screw and a PA66 housing — the 393570020 uses a nylon PA housing and copper alloy screws. They are not footprint-compatible; the pitch difference alone means a different PCB layout.